1/* 2 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 2008 Eric Seidel <eric@webkit.org> 4 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22#ifndef RenderSVGResourceGradient_h 23#define RenderSVGResourceGradient_h 24 25#include "Gradient.h" 26#include "ImageBuffer.h" 27#include "RenderSVGResourceContainer.h" 28#include "SVGGradientElement.h" 29#include <memory> 30#include <wtf/HashMap.h> 31 32namespace WebCore { 33 34struct GradientData { 35 WTF_MAKE_FAST_ALLOCATED; 36public: 37 RefPtr<Gradient> gradient; 38 AffineTransform userspaceTransform; 39}; 40 41class GraphicsContext; 42 43class RenderSVGResourceGradient : public RenderSVGResourceContainer { 44public: 45 SVGGradientElement& gradientElement() const { return static_cast<SVGGradientElement&>(RenderSVGResourceContainer::element()); } 46 47 virtual void removeAllClientsFromCache(bool markForInvalidation = true) override final; 48 virtual void removeClientFromCache(RenderElement&, bool markForInvalidation = true) override final; 49 50 virtual bool applyResource(RenderElement&, const RenderStyle&, GraphicsContext*&, unsigned short resourceMode) override final; 51 virtual void postApplyResource(RenderElement&, GraphicsContext*&, unsigned short resourceMode, const Path*, const RenderSVGShape*) override final; 52 virtual FloatRect resourceBoundingBox(const RenderObject&) override final { return FloatRect(); } 53 54protected: 55 RenderSVGResourceGradient(SVGGradientElement&, PassRef<RenderStyle>); 56 57 void element() const = delete; 58 59 void addStops(GradientData*, const Vector<Gradient::ColorStop>&) const; 60 61 virtual SVGUnitTypes::SVGUnitType gradientUnits() const = 0; 62 virtual void calculateGradientTransform(AffineTransform&) = 0; 63 virtual bool collectGradientAttributes() = 0; 64 virtual void buildGradient(GradientData*) const = 0; 65 66 GradientSpreadMethod platformSpreadMethodFromSVGType(SVGSpreadMethodType) const; 67 68private: 69 bool m_shouldCollectGradientAttributes : 1; 70 HashMap<RenderObject*, std::unique_ptr<GradientData>> m_gradientMap; 71 72#if USE(CG) 73 GraphicsContext* m_savedContext; 74 std::unique_ptr<ImageBuffer> m_imageBuffer; 75#endif 76}; 77 78} 79 80#endif 81